/// <summary>
/// Executes a parameterless synchronous or async delegate and returns the exception it throws, if any.
/// </summary>
internal static Exception RecordException(Delegate parameterlessDelegate, string parameterName)
{
Guard.ArgumentNotNull(parameterlessDelegate, parameterName);
Guard.ArgumentValid(
parameterlessDelegate.GetMethodInfo().GetParameters().Length == 0,
$"The actual value must be a parameterless delegate but was {parameterlessDelegate.GetType().Name}.",
nameof(parameterName));
Guard.ArgumentNotAsyncVoid(parameterlessDelegate, parameterName);
using (new TestExecutionContext.IsolatedContext())
{
if (AsyncToSyncAdapter.IsAsyncOperation(parameterlessDelegate))
{
try
{
AsyncToSyncAdapter.Await(parameterlessDelegate.DynamicInvokeWithTransparentExceptions);
}
catch (Exception ex)
{
return(ex);
}
}
else
{
try
{
parameterlessDelegate.DynamicInvokeWithTransparentExceptions();
}
catch (Exception ex)
{
return(ex);
}
}
}
return(null);
}
/// <summary>
/// Check that setup and teardown methods marked by certain attributes
/// meet NUnit's requirements and mark the tests not runnable otherwise.
/// </summary>
protected void CheckSetUpTearDownMethods(MethodInfo[] methods)
{
foreach (MethodInfo method in methods)
{
if (method.IsAbstract)
{
MakeInvalid("An abstract SetUp and TearDown methods cannot be run: " + method.Name);
}
else if (!(method.IsPublic || method.IsFamily))
{
MakeInvalid("SetUp and TearDown methods must be public or protected: " + method.Name);
}
else if (method.GetParameters().Length != 0)
{
MakeInvalid("SetUp and TearDown methods must not have parameters: " + method.Name);
}
else if (AsyncToSyncAdapter.IsAsyncOperation(method))
{
if (method.ReturnType == typeof(void))
{
MakeInvalid("SetUp and TearDown methods must not be async void: " + method.Name);
}
else if (!Reflect.IsVoidOrUnit(AwaitAdapter.GetResultType(method.ReturnType)))
{
MakeInvalid("SetUp and TearDown methods must return void or an awaitable type with a void result: " + method.Name);
}
}
else
{
if (!Reflect.IsVoidOrUnit(method.ReturnType))
{
MakeInvalid("SetUp and TearDown methods must return void or an awaitable type with a void result: " + method.Name);
}
}
}
}
